Here's Lucy Season 5 - Episode 24 END | CBS 1973

Lucy and Harry are packing up the office, and they reminisce on some of the (mis)adventures they've had together, via clips from previous episodes. While they are talking about their memories, and Harry retiring, Lucy opens up a bottle of Champagne that she got as a gift, that she's been chilling, and not knowing what to do with it, drink the whole magnum themselves.